13706819 has 6 divisors (see below), whose sum is σ = 15944724. Its totient is φ = 11748660.

The previous prime is 13706813. The next prime is 13706837. The reversal of 13706819 is 91860731.

It is not a de Polignac number, because 13706819 - 2¹² = 13702723 is a prime.

It is a super-2 number, since 2×13706819² = 375753774197522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13706813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139817 + ... + 139914.

It is an arithmetic number, because the mean of its divisors is an integer number (2657454).

Almost surely, 2^13706819 is an apocalyptic number.

13706819 is a deficient number, since it is larger than the sum of its proper divisors (2237905).

13706819 is an equidigital number, since it uses as much as digits as its factorization.

13706819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279745 (or 279738 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 13706819 is about 3702.2721401863. The cubic root of 13706819 is about 239.3199440493.

The spelling of 13706819 in words is "thirteen million, seven hundred six thousand, eight hundred nineteen".